Nortel Networks Option 11C Mini Manuel D’Utilisation
Page 238 of 332
Chapter 17 — Connecting the telephones
553-3021-209
Standard 3.00
April 2000
Figure 69
Attendant Console connections
Attendant Console connections
Cross-connect
block
W-BL
BL-W
BL-W
W-O
O-W
O-W
Y-BL
BL-Y
BL-Y
V-S
S-V
S-V
W-S
S-W
S-W
R-O
To 1st TN
To 2nd TN
To 3rd TN
Y-O
O-Y
O-Y
+VPS
+VPS RTN
Relay 2
Relay 1
Relay 1
ASM/
ADN
R-G
G-R
G-R
Console power can be
obtained from the
4th and 5th
TNs on the circuit card.
obtained from the
4th and 5th
TNs on the circuit card.
To 4th TN Tip
To 4th TN Ring
Console
connector
Cable to
M2250
Console
M2250
Console
26
1
27
2
30
5
32
7
33
8
41
16
42
17
16
42
17
50
25
25
Cable from
console to
cross-connect
terminal
To 5th TN Tip
To 5th TN Ring
To 5th TN Ring
O-R
BK-BL
BL-BK
BL-BK
36
11
11
GND
TC
Note 1: The M2250 is powered through the line circuits.
In addition to the primary TN, secondary TN and ASMTN, two TNs are cabled to
the M2250. Maximum loop length is 3000 ft (915 m) of 24 AWG (5.0 Metric Wire Gauge).
In addition to the primary TN, secondary TN and ASMTN, two TNs are cabled to
the M2250. Maximum loop length is 3000 ft (915 m) of 24 AWG (5.0 Metric Wire Gauge).
Note 2: When additional options are used (BLF) an additional 16V dc power supply is
required. The 16V dc source is cabled through +VPS and +VPS RTN leads. The maximum
distance from the console to the power source is 120 ft (36 m) of 24 AWG (5.0 Metric Wire Gauge) wire.
required. The 16V dc source is cabled through +VPS and +VPS RTN leads. The maximum
distance from the console to the power source is 120 ft (36 m) of 24 AWG (5.0 Metric Wire Gauge) wire.
(Note 1)
(Note 2)
553-8352.EPS